Diagnosis: The test habitually resumes that of Alocodera cockayni, but it differs from it in the shape of the much stronger contraction at the base of the neck, the truncate pseudostome, the straight (rectilinear) sides of the neck, the dimensions, and the aspect of the membrane. This membrane seems to be smooth except for some occasional thicker plates. The neck is attached to the rest of the test as it was a tube fixed by pressing it a little to strengthen it and slightly deform the part of the test supporting it.